Terms of use
The rules of the game off the board: your account, purchases and what we expect from every player.
Last updated: October 28, 2026
These terms apply to the Ridgeline app and its online play. By using the app, you accept them. Apple's standard license agreement also applies to the app downloaded from the App Store.
The app and purchases
Ridgeline is free, with ads shown between two games. Two in-app purchases are offered in Options › Ridgeline Full:
- Full version, one-time purchase: no ads, statistics, and all your games to replay.
- Monthly subscription: on top of the full version, the coach's analysis (10 a day).
Payment is charged to your Apple account. The subscription renews automatically every month unless you cancel it at least 24 hours before the end of the current period, in your Apple account settings (Settings › your name › Subscriptions). Refunds are handled by Apple under its own terms.
Your online account
To play online, you pick a username; no email address or password is required. The account is tied to your iPhone by a key kept in its keychain: if you lose the device without a keychain backup, the account cannot be recovered.
One player, one account. You can delete your account at any time in Options › Delete my online account.
What is not allowed
- A username that is insulting, hateful, sexual, impersonates someone else or advertises something.
- Getting help from a program or another person during an online game.
- Using several accounts, or colluding with another player, to win or lose rating points.
- Exploiting a bug to win a game or skew the leaderboard, or trying to disrupt the service.
- Harassing a player, for example by following or inviting them over and over.
You can report or block a player from their profile.
Sanctions
If these rules are broken, or to undo the effects of cheating, we may rename a username, cancel a game, correct a rating, suspend an account or delete it. To contest a decision, write to us with your username: .
What is public
Your username, your rating, the country you choose to show and the record of your online games are visible to other players. Your online games can be watched live and replayed by your opponent. The details are in the privacy policy.
Intellectual property
The app, its name, logo, images, texts, sounds and code belong to Ridgeline's publisher. You may use the app to play, for personal use. Copying, modifying, decompiling or reselling it, or reusing any of its parts, is not allowed without written permission.
You are, however, free to share screenshots and videos of your games, including live on a streaming platform.
The coach's analysis
The coach's comments are written by an AI from the game engine's analysis. Only the game's list of moves is sent to it: no personal data, no username, IP address or identifier. These comments can contain mistakes: they are advice, not a ruling.
The service
We do our best to keep online play running without interruption, but it is provided as is: it may be interrupted for maintenance, changed or discontinued. Ratings, games and achievements have no monetary value; ratings may be reset, for example when the game officially opens.
To the extent permitted by law, we are not liable for a game lost because of a network outage, a service failure or a problem with your device.
Changes
These terms may change as the game evolves. The date at the top of the page shows the last update; continuing to use the app after a change means you accept it.